See Figures 1 through 11
Dwell or point gap must be set before the timing is set. Also, the idle speed must be set to specifications.
The engine must be warmed up before the timing is set (oil temperature of 122ordm;F-158ordm;F.).
- Connect a timing light. On most VWs, you won't be able to hook the timing light power leads to the battery, therefore, connect the positive lead from the timing light to terminal #15 on the ignition coil, and hook the negative lead from the test light to ground (intake manifold, etc.). This procedure is for DC lights only and cannot be used on Hall electronic ignition systems.
After hooking up the timing light according to manufacturer's instructions, disconnect the vacuum hose, if so advised by the "Tune-up Specifications" chart, and re-adjust the idle speed if necessary.
On Hall electronic ignition systems, the idle stabilizer must be bypassed before the idle can be adjusted. See the illustration.
- Start the engine and run it at the specified rpm. Aim the timing light at the crankshaft pulley on upright fan engines and at the engine cooling fan on the suitcase engines. The rubber plug in the fan housing will have to be removed before the timing marks on Type 3 and Type 4 engines can be seen.
- Read the timing and rotate the distributor accordingly.
Rotate the distributor in the opposite direction of normal rotor rotation to advance the timing. Retard the timing by turning the distributor in the normal direction of rotor rotation.
- It is necessary to loosen the clamp at the base of the distributor before the distributor can be rotated. It may also be necessary to put a small amount of white paint or chalk on the timing marks to make them more visible.